Isomeric states observed in heavy neutron-rich nuclei populated in the fragmentation of a 208Pb beam

被引：68

作者：

Steer, S. J. ^{[1
]}

Podolyak, Zs. ^{[1
]}

Pietri, S. ^{[1
]}

Gorska, M. ^{[2
]}

Grawe, H. ^{[2
]}

Maier, K. H. ^{[3
,4
]}

Regan, P. H. ^{[1
]}

Rudolph, D. ^{[5
]}

Garnsworthy, A. B. ^{[1
,6
]}

Hoischen, R. ^{[5
]}

Gerl, J. ^{[2
]}

Wollersheim, H. J. ^{[2
]}

Becker, F. ^{[2
]}

Bednarczyk, P. ^{[2
,4
]}

Caceres, L. ^{[2
,7
]}

Doornenbal, P. ^{[2
,8
]}

Geissel, H. ^{[2
]}

Grebosz, J. ^{[2
,4
]}

Kelic, A. ^{[2
]}

Kojouharov, I. ^{[2
]}

Kurz, N. ^{[2
]}

Montes, F. ^{[2
]}

Prokopwicz, W. ^{[2
]}

Saito, T. ^{[2
]}

Schaffner, H. ^{[2
]}

Tashenov, S. ^{[2
]}

Heinz, A. ^{[6
]}

Pfuetzner, M. ^{[9
]}

Kurtukian-Nieto, T. ^{[10
]}

Benzoni, G. ^{[11
]}

Jungclaus, A. ^{[12
]}

Balabanski, D. L. ^{[13
,14
,15
]}

Bowry, M. ^{[1
]}

Brandau, C. ^{[1
]}

Brown, A. ^{[1
,16
]}

Bruce, A. M. ^{[17
]}

Catford, W. N. ^{[1
]}

Cullen, I. J. ^{[1
]}

Dombradi, Zs. ^{[18
]}

Estevez, M. E. ^{[19
]}

Gelletly, W. ^{[1
]}

Ilie, G. ^{[8
,20
]}

Jolie, J. ^{[8
]}

Jones, G. A. ^{[1
]}

Kmiecik, M. ^{[4
]}

Kondev, F. G. ^{[21
]}

Kruecken, R. ^{[22
]}

Lalkovski, S. ^{[17
,23
]}

Liu, Z. ^{[1
]}

Maj, A. ^{[4
]}

机构：

[1] Univ Surrey, Dept Phys, Guildford GU2 7XH, Surrey, England

[2] GSI Darmstadt, D-64291 Darmstadt, Germany

[3] Univ W Scotland, Paisley PA1 2BE, Renfrew, Scotland

[4] Inst Nucl Phys, PL-31342 Krakow, Poland

[5] Lund Univ, Dept Phys, S-22100 Lund, Sweden

[6] Yale Univ, WNSL, New Haven, CT 06520 USA

[7] Univ Autonoma Madrid, Dept Fis Teor, Madrid, Spain

[8] Univ Cologne, IKP, D-50937 Cologne, Germany

[9] Univ Warsaw, Fac Phys, PL-00681 Warsaw, Poland

[10] Univ Santiago de Compostela, Santiago De Compostela, Spain

[11] Ist Nazl Fis Nucl, Sez Milano, I-20133 Milan, Italy

[12] CSIC, Inst Estruct Mat, E-28006 Madrid, Spain

[13] Bulgarian Acad Sci, INRNE, BG-1784 Sofia, Bulgaria

[14] Univ Camerino, Dipartimento Fis, I-62032 Camerino, Italy

[15] INFN Perugia, I-62032 Camerino, Italy

[16] Michigan State Univ, NSCL, E Lansing, MI 48824 USA

[17] Univ Brighton, Sch Engn, Brighton BN2 4GJ, E Sussex, England

[18] Inst Nucl Res, H-4001 Debrecen, Hungary

[19] Inst Fis Corpuscular, Valencia, Spain

[20] Natl Inst Phys & Nucl Engn, Bucharest, Romania

[21] Argonne Natl Lab, Nucl Engn Div, Argonne, IL 60439 USA

[22] Tech Univ Munich, Phys Dept E12, D-8046 Garching, Germany

[23] Univ Sofia St Kliment Ohridski, Fac Phys, Sofia, Bulgaria

[24] Japan Atom Energy Res Inst, Kizu, Kyoto 6190215, Japan

来源：

PHYSICAL REVIEW C | 2011年 / 84卷 / 04期

基金：

美国国家科学基金会; 瑞典研究理事会; 英国工程与自然科学研究理事会;

关键词：

DATA SHEETS; SPECTROSCOPY; LEVEL; DECAY;

D O I：

10.1103/PhysRevC.84.044313

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

Heavy neutron-rich nuclei were populated via the fragmentation of a E/A = 1 GeV Pb-208(82) beam. Secondary fragments were separated and identified and subsequently implanted in a passive stopper. By the detection of delayed gamma rays, isomeric decays associated with these nuclei have been identified. A total of 49 isomers were detected, with the majority of them observed for the first time. The newly discovered isomers are in Hg-204,205(80), Au-201,202,204,205(79), Pt-197,203,204(78), Ir-195,199-203(77), Os-193,197-199(76), Re-196(75), W-190,191(74), and Ta-189(73). Possible level schemes are constructed and the structure of the nuclei discussed. To aid the interpretation, shell-model as well as BCS calculations were performed.

引用

页数：22

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